Band-fastening.



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OOOOOOO al gdl/ UNITED STATES PATENT Patented July 28, 1903.

OFFICE.

JOHN CHRISTOPHER, OF DES MOINES, IOWA, ASSIGNOR TO DEMPSTER MANUFACTURING COMPANY, OF 'DES MOINES, IOWA, A CORPORATION OF IOWA.

B ANDrFASTEN'lNG.

SPECIFXOATION formingpart of Letters Patent No. 734,512, dated July 28, 1903.

Application filed dune 18, 1902.

To all whom it may concern:

Be it known that I, J oHN- H. CHRISTOPHER, a citizen of the United States of America, and a resident of Des Moines, Polk county, Iowa, have invented a new and useful Band-Fastening, of which the following is a specification.

The object of this invention is to provide improved means for connecting end portions of a hoop or band employed on Wooden containing vessels and the like, whereby said end portions of the hoop orband may be approximated to each other or separated, as required,- to tighten a band on a vessel or slacken the same for adjustment or removal.

My invention consists in the combination of heads recessed to receive end portions of a hoop or band, means for connecting said heads, and wedge-plates mounted for rectilinear movement in the heads and arranged to engage frictionally the end portions of the hoop or band.

My invention consists, further, in the construction, arrangement, andcombination of elements hereinafter set forth, pointed out in my claims, and illustrated by the accompanying drawings, in which-- Figure 1 is an elevation, partly in section, illustrating the application of two of the heads to end portions'of a hoop or band mounted on a segment of a vessel. Fig. 2 is a cross-section onthe indicated line 2 2 of Fig. 1. Fig. 3 is a cross-section on the indicated line 3 3 of Fig. 1. Fig. 4 is a perspective of a wedgeplate that may be employed in either of the heads. Fig. 5 is a bottom plan of the Wedgeplate.

In the construction of the device as shown the numerals 10 11 designate heads identical in construction and arranged in opposition to each other. Each of the'heads 10 11 is recessed or formed hollow, and each recess or cavity therein is approximately rectangular in cross-section and tapering from end to end. The bottom of each head is formed of two transverse plates 12 13, parallel with each other and spaced apart, and the bar or plate 13 is raised slightly from the lower edges of the side walls to permit the end portion of a hoop or band to be passed beneath it, if desired. Wedge-plates 1415 are mounted lon- SerialNo. 11Z,262. (Nomodel) gitudinally of and project at either end from the recesses or cavities of the heads 10 11 and are formed with ratchet-teeth or serrations 16 transversely of their lower faces. Yoke portions 17 18 form the top of each of the heads 10 l1 and form seats for a straining-bolt 19, which is mounted through both heads and confined by nuts 20 21 on its ends outside of and bearing against the ends of the yokes 17. In the drawings the numeral 22 designates a tank or barrel, and a hoop or band 23, preferably formed of bar metal, is mounted around said vessel. The end portions '23 23 of the hoop or band 23 are inserted between the lower faces of the wedge-plates 14 15 and the transverse bottom plates 12 13 of the heads. Then the wedge-plates 14 15 are driven apart slightly to cause the teeth or serrations thereon to .bite the end portions of the hoop or band 23, and then the nuts 20 21 are screwed upon the straining-bolt and move the heads toward each other. heads 10 11 toward each other under the strain of the nuts 20 21 said heads bear on and press the wedge-plates toward the band ends and establish and maintain a substantial frictional engagement thereof and atthe same time move the wedge-plates toward each other coincident with the approximation of the heads, thus bringing the end portions of the band closer together and tightening said band on the vessel. A reverse movement of the nuts 20 21 will slacken theengagement of the wedge-plates on the band ends and permit theremoval of the band for repair or substitution.

It will. be observed that the straining-bolt and nuts do not act directly on the wedgeplates, but draw on the heads and depend on the tapering formation of the recesses in the heads for the pressure of the wedge-plates toward the band ends. It also willbe'no ticed that the outer faces of the wedge-plates are recessed at 24. to avoid frictional'contact of the plates with the bolt and, are curved from end to end toconform tothe curvature of the band when in contact therewith.

I claim as my invention- 1. Asan improved article of manufacture, a band-fastening comprising the heads recessed for the passage therethrough of band In the movement of the ends, the recesses of the heads tapered from end to end and of greater depth than the thickness of the band,friction-plates mounted in the tapering recesses between the upper portions of the heads and the band ends therein and projecting beyond the heads at both ends, said friction-plates formed with cavities 24 for the free passage of the straining-bolt, and a straining-bolt connecting the heads and independent of the friction-plates.

2. As an improved article of manufacture, a band-fastening comprising the heads recessed for the passage therethrough of band ends, the recesses of the heads tapered from end to end and of greater depth than the thickness of the band ends, a straining-bolt connecting the heads,friction-plates mounted in the tapering recesses between the outer portions of the heads and the band ends and movable longitudinally independent of the heads and straining-bolt, said friction-plates formed with teeth for frictional engagement with the band ends and curved from end to end to conform to the curvature of the band ends, whereby the strain of the bolt may be transmitted through the heads and frictionplates progressively and successively to the band ends.

'Signed by me at Des Moi'ncs, Iowa, this 2d day of May, 1902.

JOHN H. CHRISTOPHER. Witnesses:

A. R. DEMPSTER, S. 0. SWEET. 

